Boiler.



D. HANLON.

BOILER.

APPLIOATIQN'HLED MAY 17, 190s.

, Patented-NOV. 23, 1909. 2 SHEETS-SHEET 1l D. HANLUN.

BOILER.

APPLIoATIoN FILED MAY 17. 1909.

Patented Nov. 23, 1909.

DANIEL HANLON, OF SPOKANE, WASHINGTON.

BOILER.

Specification of Letters Patent.

Patented Nov. 23, 1909.

Application tiled May 17, 1909. Serial No. 496,353.

To all 'whom it may concern:

Be it known that I, DANIEL HANLoN, a

citizen of the United States, residing at Spokane, in the county of Spokane and State of Washington, have invented new and useful Improvements in Boilers, of which the following is a specification. f My present invention has relation to boilers, such as are designed more especially for use in hot water heating systems, and its novelty, utility and practical advantages will be fully understood from the following description and claim when the same are read in connection with the drawings accompanying and forming part of this specification, in which:

Figure l is a view partly in side elevation and partly in longitudinal vertical section of a boiler constructed in accordance with my present invention. Fig. 2 is a front elevation of the boiler as the same appears with the smoke-uptake removed. Fig. 3 is a de* tail transverse section taken in the plane indicated by the line 3-3 of Fig. 1 and showing the arrangement of the depending side portions of the upper water container in the recesses in the side walls or portions of the lower water container.

Similar letters designate correspondingL ing designed to be closed by a door d of con-` ventional or any other suitable construction.

Arranged above the ash pit c and supported by the metallic base portion b is a suitable grate e, and also supported by the metallic base portion is a bridge wall f, which, in the preferred embodiment of my invention, is adjustable in the direction of.

the length of the apparatus to meet the requirements of dilferent fuels.

Superposed on the metallic base portion b is a front water containing section C, of cast-metal, preferably shaped as best shown in Fig. 2, and having door openings g and h.,

From the upper portion of the said section C extends a pipe D adapted to be connected with the pipes forming a hot water heating system (not shown).

E E are hollow side sections, of castmetal, which are superposed on the base A and abut at their forward ends against the inner side of the section C to the interior of which their interiors are connected, preferably through the -medium of heavy slip nipples F, such as shown by dotted lines in Figs. 1 andv 2. The section G may be connected to and held tight against the side sections E in any manner consonant with the purpose of my invent-ion, though l prefer to effect the connection through the medium of suitable bolts z' secured in lugs j on the sections. The upper sides or edges of the side sections E are concave, as indicated by 7c, and in the preferred embodiment of my in vention the outer walls are tapped, as indicated by Z, for the connection of pipe sections hereinafter described.

Superposed on the rear of the brick portion a of base A is a water containing section G, which is preferably of cast-metal and concave-convex in cross-section, its concave side being inward or adjacent to the rear ends of the side sections E as shown in Fig. 1. The said section G is connected through pipes H with the taps Z of the side sections E, and connected to the upper portion of the said section G is a pipe L designed to lead water from the circulating pipes of the heating system back to the boiler. From this it will be manifest that when the'water in the circulating system has given off its heat, it will pass through pipe L to the rear cast-metal section G, and from the lower portion of the latter will pass through pipes H to the lower and rear portions of the side sections and from the latter will pass through the nipples F into the front section C. At this time the water will be heated to a considerable extent because of its passage through the highly heated sections and in close proximity to the fire, and from the upper portion of the section C the heated water will pass through the pipe D back to the pipes of the circulating system.

It will be readily gathered from the foregoing that the sections C, E and G may be readily set upon the base A and as readily connected together; the lower portion of the rear section G being connected with the rear ends of the sections E through the medium of lugs and bolts such as z' and j, or other suitable means.

I is the shell of the upper water container comprised in my novel boiler. The said shell is concave in cross-section at its under side, is connected with the rear cast-'l metal section Gr through the medium of a l hook p and an eye-bolt r, Fig. l, and has depending side portions s seated in the concavities 7c in the upper' sides of the side sections E. Extending through the shell I which is provided with an inlet t for water and an outlet u for steam, are fines J, suitably fixed to the heads of the shell and designed to carry the products of combustion through the same. From the forward ends of the fiues J the smoke and other products of combustion pass into an uptake'K which is connected to the shell I and to the front cast-metal section K in the manner illustrated, or in any other manner compatible with the purposes of my invention.

Vhcn desirable the front wall of the uptake K may be comprised in a cast--iron frame which I contemplate employing` in front of the cast-metal section C to carry the doors complementary to the openings g and /L in the said frame. I would also have it understood that when deemed expedient the said frame may be equipped with doors positioned to afford ready access to the flues for cleaning purposes, but inasmuch as the said cast-iron frame is well known and does not form part of my present invention, I have deemed it unnecessary to illustrate the same.

By reason of the water-containing shell I being concave in cross-section at its under side, the fiames and other products of combustion are deiected downwardly and outwardly to the inner sides of the water-containing side sections E, and in that way the said side sections are adequately heated. It will also be observed in this connection that the transverse concavity in the under side of the shell I provides the said shell with depending side portions, and that said depending side portions serve by resting in the seats or concavities 7c in the upper edges of the side sect-ions E to strongly hold the shell I and sections E together.

In the practical operation of my improvements, the products of combustion from the fire on the grate e pass rearwardly between the hollow side sections E and thence upwardly in front of the hollow rear section G, and during such passage raise the temperature of the water conta-ined in the said section. It will also be noticed at this point that the fire on the grate e will, because of its being in close proximity to the section C, highly heat said section and the water contained therein so that the water will be heated to a high degree immediately precedent to its passage back to the pipes of the circulating system. It will also be noticed that the products of combustion after passing upwardly at the inner side of the section G will pass forwardly through the ues y J to the uptake, and thence out of the apparatus.

By virtue of the arrangement described it will be manifest that steam will be generated in the steel shell I, and that the said steam may be put to any use desired.

It will be gathered from the foregoing that in addition to the facility with which my novel boiler may be installed, the said boiler is advantageous in that it is simple and inexpensive in construction and is well adapted to withstand the usage to which boilers are ordinarily subjected.

VThe construction herein illustrated and described constitutes the best practical embodiment of my invention that- I have as yet devised, but it is obvious that in the future practice of the invention such changes or modifications may be made as do not involve departure from the scope of my invention as defined in the clairnappcnded.

Having described my invention, what I claim and desire to secure by Letters-Patent, is:

A boiler comprising a vsuitable base, a water-containing shell disposed above the base and having an under side concave in cross-section and also having longitudinal hollow depending portions at opposite sides of said concave underside, longitudinal flues extending through said shell, a front hollow water-containing section superposed on the base and arranged in front of the shell, a rear hollow water-containing section, superposed on the base and having `a concave inner side opposed to the rear end of the shell, side hollow water-containing sections superposed on the base and interposed between and connected with the front and rear sections and having crosswise concavities in their upper sides receiving and holding the depending side portions Vof the shell, and an uptake arranged above the front water-containing section and adapted to receive products of combustion from the forward ends of the flues in the shell.

In testimony whereof' I have hereunto set my hand in presence of two subscribing witnesses.

DANIEL HANLON. 

